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| 1 | <?php |
| 2 | |
| 3 | namespace Wikibase\Lexeme\Domain\EntityReferenceExtractors; |
| 4 | |
| 5 | use Wikibase\DataModel\Entity\EntityDocument; |
| 6 | use Wikibase\DataModel\Entity\ItemId; |
| 7 | use Wikibase\Lexeme\Domain\Model\FormSet; |
| 8 | use Wikibase\Lexeme\Domain\Model\Lexeme; |
| 9 | use Wikibase\Repo\EntityReferenceExtractors\EntityReferenceExtractor; |
| 10 | use Wikimedia\Assert\Assert; |
| 11 | |
| 12 | /** |
| 13 | * Extracts the item ids of a lexeme's forms' grammatical features |
| 14 | * |
| 15 | * @license GPL-2.0-or-later |
| 16 | */ |
| 17 | class GrammaticalFeatureItemIdsExtractor implements EntityReferenceExtractor { |
| 18 | |
| 19 | /** |
| 20 | * @param EntityDocument $lexeme |
| 21 | * @return ItemId[] |
| 22 | */ |
| 23 | public function extractEntityIds( EntityDocument $lexeme ) { |
| 24 | Assert::parameterType( Lexeme::class, $lexeme, '$lexeme' ); |
| 25 | '@phan-var Lexeme $lexeme'; |
| 26 | |
| 27 | /** @var Lexeme $lexeme */ |
| 28 | return $this->extractGrammaticalFeatureIds( $lexeme->getForms() ); |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * @param FormSet $forms |
| 33 | * @return ItemId[] |
| 34 | */ |
| 35 | private function extractGrammaticalFeatureIds( FormSet $forms ) { |
| 36 | $ids = []; |
| 37 | |
| 38 | foreach ( $forms->toArrayUnordered() as $form ) { |
| 39 | $ids = array_merge( $ids, $form->getGrammaticalFeatures() ); |
| 40 | } |
| 41 | |
| 42 | return array_values( array_unique( $ids ) ); |
| 43 | } |
| 44 | |
| 45 | } |